PAM complements NHI governance, but the identity model is different

At a glance

What this is: This analysis explains why PAM covers privileged human accounts but does not map cleanly to non-human identities such as service accounts, API keys and secrets.

Why it matters: IAM, PAM and NHI teams need a clear governance boundary so they do not force human-centric controls onto identities that are created, used and offboarded in very different ways.

Context

PAM and NHI governance solve different identity problems. PAM is built around privileged human users with authoritative records, established provisioning workflows and account ownership that can be traced back to HR and directory systems. Non-human identities are different because they are often created directly in cloud services, CI/CD pipelines and Kubernetes environments.

The governance gap is not just scale, it is model mismatch. When service accounts, API keys and secrets are managed as though they were human administrator accounts, teams lose lifecycle context, ownership clarity and the ability to understand which applications, data sets and workloads depend on each identity. That is where PAM stops being a complete answer and NHI management becomes necessary.

Key questions

Q: What breaks when service accounts are left outside PAM governance?

A: Service accounts can continue to move data on schedules, automate exports, and hold permissions long after their original purpose changed. If they are not inventoried, reviewed, and scoped like other privileged identities, they become quiet extraction paths that bypass the behavioural signals teams expect from human admins.

Q: Why do non-human identities create a larger governance problem than human accounts?

A: Non-human identities scale faster, are used by systems rather than people, and often carry broad or persistent access. That combination makes ownership, review, and revocation harder than with human accounts. The governance problem is not only visibility. It is also the size of the potential blast radius if a machine credential is exposed or misused.

Q: What are the signs that NHI governance is missing from a PAM programme?

A: Common signs include service accounts created outside identity workflows, unknown ownership, undocumented application dependencies and credentials that remain in use long after the workload changes. When teams cannot answer who owns an identity or what depends on it, PAM is seeing the account but not the context needed to govern it.

Q: How should security teams separate human PAM from NHI privilege governance?

A: They should treat human PAM as session and approval control, and NHI privilege governance as lifecycle and scope control. Human admins can often be brokering through interactive sessions, but service accounts and tokens may run unattended. The operating model should separate elevation, rotation, and offboarding so privileged machine access is not left to human workflow assumptions.

Technical breakdown

Why PAM maps to privileged human accounts

PAM is designed around identities that have stable ownership, predictable provisioning and a clear tie to a person or role. It assumes a central authoritative source, such as HR or Active Directory, can describe who the user is, what access they should have and when that access should end. That model works for administrators and generic human accounts with broad privilege because the access relationship is relatively durable and reviewable. It also supports credential management, session oversight and auditability in a way that fits human governance cycles.

Practical implication: use PAM for privileged human access where identity ownership and lifecycle are already authoritative and reviewable.

Why non-human identities break the PAM data model

Non-human identities are often created by developers and DevOps teams directly in cloud platforms, rather than by identity governance workflows. They can be ephemeral, reused across multiple consumers and disconnected from a single owner or business context. That means the identity record is incomplete before governance even begins. PAM tools built on human identity assumptions struggle to infer lifecycle, relationships and access scope when the identity may exist only as a service account, API key or secret embedded in modern infrastructure.

Practical implication: inventory non-human identities from the systems where they are born, not from human-centric governance records.

Why visibility and offboarding need a separate NHI control plane

The hardest part of NHI governance is not just access control, but contextual visibility. Teams need to know which applications, data stores and workloads each non-human identity touches, who owns it and whether it still has a valid purpose. Without that context, rotation, stale-account removal and offboarding become guesswork. This is why NHI governance is not a PAM extension in practice. It is a different control plane for discovery, ownership mapping and lifecycle enforcement across cloud and application estates.

Practical implication: separate discovery, ownership and offboarding workflows for non-human identities from your privileged human account processes.

Threat narrative

Attacker objective: The objective is to move from a weakly governed non-human credential into broader cloud or application access that can be used for persistence, lateral movement or data exposure.

1. Entry often begins with privileged non-human identities that lack the strong authentication controls used for humans, making service accounts and secrets attractive starting points for adversaries.
2. Escalation follows when those identities are overused, poorly owned or scattered across cloud and DevOps environments, giving attackers broader access than the original use case suggests.
3. Impact occurs when the compromised identity provides access to applications, infrastructure or data paths that were never mapped to a single accountable owner.

Breaches seen in the wild

• BeyondTrust breach 2024: A stolen BeyondTrust Remote Support API key let a China state-sponsored actor reset accounts and reach US Treasury workstations in 2024.
• Azure Key Vault Contributor escalation 2024: Datadog found Azure Key Vault Contributor could add itself to access policies and read every secret, key and certificate in a vault.

Read our 52 NHI Breaches Analysis report for a comprehensive view of breaches impacting Non-Human Identities including AI Agents.

NHI Mgmt Group analysis

PAM complements NHI governance, but it does not replace it. PAM is optimised for privileged human identities whose ownership, authority and lifecycle can be anchored in HR and directory systems. Non-human identities are born in clouds, pipelines and applications, which means the governance problem changes before the control plane even begins. The practitioner conclusion is simple: treat PAM and NHI management as adjacent disciplines with different source-of-truth assumptions.

‘Human-admin control plane’ is the wrong mental model for service accounts. Service accounts and API keys do not behave like long-lived employee accounts that pass through standard provisioning and offboarding. They are often ephemeral, multi-consumer and context-poor, so the control objective shifts from session oversight to lifecycle visibility and ownership mapping. The implication is that governance must start where the identity is created, not where a privileged human logs in.

Identity blast radius is determined by context, not just privilege. A non-human identity may have narrow intended scope but still expose a large operational surface if it is reused across workloads, batch jobs and tools. That makes ownership, dependency mapping and decommissioning more important than treating the identity as merely another privileged account. Practitioners should judge risk by how far the identity can propagate, not only by its nominal role.

Contextless identity is the core governance failure mode. The article makes clear that many NHI problems arise because ownership, relationships and lifecycle status are unknown or undocumented. Without that context, even a well-run PAM programme cannot tell whether a credential is still needed, where it is used or what should happen when it should be retired. The practical conclusion is that visibility must be first-class governance, not an afterthought.

From our research library:

• 97% of NHIs carry excessive privileges, increasing unauthorised access and broadening the attack surface, according to the Ultimate Guide to NHIs.
• Read next: NHI Lifecycle Management Guide

What this signals

Contextless identity is the governance problem to watch. When a service account or API key exists without a clear owner, workload link or retirement plan, PAM can observe the credential but cannot govern its lifecycle. That gap is where offboarding, rotation and accountability need to move into a dedicated NHI process.

NHI governance programmes should treat discovery and ownership mapping as the entry point, not a reporting exercise. The practical aim is to make every non-human identity answer three questions: who owns it, what depends on it and when it can be removed.

For practitioners

• Map identity ownership to source systems Identify whether each credential, service account or secret is created in cloud platforms, CI/CD pipelines or application code, then record its operational owner and business purpose.
• Separate human and non-human lifecycle workflows Use PAM for privileged human accounts and run a distinct NHI lifecycle process for discovery, review, rotation and offboarding of machine identities.
• Correlate non-human identity context across platforms Link each non-human identity to the applications, workloads, data stores and consumers that depend on it so you can judge blast radius before making changes.
• Retire stale identities on a business schedule Prioritise decommissioning service accounts and secrets that no longer support an active workload, especially where ownership or usage cannot be confirmed.

Key takeaways

• PAM is still necessary for privileged human accounts, but its control model does not match the way non-human identities are created and used.
• The critical weakness is missing identity context, especially ownership, dependency mapping and lifecycle status for service accounts and API keys.
• Practitioners need separate governance for NHI discovery, offboarding and rotation rather than relying on human-admin controls alone.

Key terms

• Non-Human Identity (NHI): A digital identity assigned to a non-human entity such as a software application, service account, API key, bot, machine, or AI agent that enables it to authenticate and interact with systems without direct human involvement. NHIs now outnumber human identities in most enterprises by 25 to 50 times.
• Privilege Access Management: Privilege Access Management is the discipline of controlling and monitoring elevated access to critical systems and data. It governs how privileged accounts, credentials, sessions, and commands are issued, used, recorded, and revoked, so administrative power is limited, traceable, and aligned to policy, risk, and operational need.
• Identity context: The entitlement, ownership, and purpose information that explains why an action occurred and whether it was expected. For security operations, identity context turns raw alerts into decisions by showing which human or non-human identity acted and what it was allowed to do.
• Lifecycle Offboarding: Lifecycle offboarding is the process of removing an identity when it is no longer needed or no longer under the original owner’s control. In NHI programmes, it applies to service accounts and integrations as well as people, and it is essential for preventing stale access from surviving ownership changes.

Deepen your knowledge

NHI governance, agentic AI identity, and machine identity lifecycle are core topics in our NHI Foundation Level course, the industry's only accredited NHI security programme. If you are building or maturing an IAM programme, it is worth exploring.